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Watlow
Watlow AC Style MI Mini Plug Thermocouple
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MI thermocouple Style AC; mini plug; to ~1200 °C; MgO. RFQ + selection help.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Accuracy
Meets or exceeds initial calibration tolerances per ASTM E230
Approvals
ASTM E230 color coding / tolerances (typical sensor constructions)
Style
AC — mineral-insulated thermocouple with plug or jack termination (mini plug for sheath ≤0.125 in)
Temperature
MI constructions commonly to about 1200 °C (2200 °F); type/sheath dependent
Insulation
Compacted MgO mineral insulation (XACTPAK sheath)
Calibration
Type J, K and other ANSI/IEC calibrations; ASTM E230 color-coded connectors
Fits quick-connect mineral-insulated sensing where you need a Watlow Style AC XACTPAK thermocouple with mini plug/jack termination for sheaths up to 0.125 in OD.
Key advantages
- Style — AC MI thermocouple with plug or jack (mini plug for ≤0.125 in sheath)
- Temperature — Commonly to about 1200 °C (2200 °F), type/sheath dependent
- Insulation — Compacted MgO (XACTPAK)
- Calibration — Type J, K and other ANSI/IEC; ASTM E230 color-coded connectors
- Sheath — From about 0.020 in (0.50 mm); matching-alloy pins (except R/S compensating)
Typical applications
- Heat treating, furnaces, and kilns.
- Turbines and bearing temperature.
- Power stations and process OEM.
Selection guide
- Calibration / junction — J/K/etc.; grounded/ungrounded/exposed
- OD / length — Sheath geometry
- Connector — Mini plug vs jack
- Sheath alloy — SS vs high-temp alloys
Common mistakes
- Using mini plug on sheaths above 0.125 in.
- Wrong compensating alloys for Types R/S.
- Exceeding type/sheath temperature limits.
When to RFQ / what to tell us
- Type, OD, length, junction.
- Plug vs jack; quantity; ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 22836 |
| Brand | Watlow |
| Model | AC Style Mineral Insulated Mini Plug Thermocouple |
| Product type | Thermocouple |
| Style | AC — mineral-insulated thermocouple with plug or jack termination (mini plug for sheath ≤0.125 in) |
| Temperature | MI constructions commonly to about 1200 °C (2200 °F); type/sheath dependent |
| Insulation | Compacted MgO mineral insulation (XACTPAK sheath) |
| Calibration | Type J, K and other ANSI/IEC calibrations; ASTM E230 color-coded connectors |
| Sheath | Diameters from about 0.020 in (0.50 mm); miniature connectors for OD up to 0.125 in (3.0 mm) |
| Termination | Plug or jack; pins/contacts same alloy as thermocouple (except Types R/S compensating alloys) |
| Junction | Grounded, ungrounded, or exposed junction options |
| Accuracy | Meets or exceeds initial calibration tolerances per ASTM E230 |
| Connector | ASTM color-coded connectors; adapter mounts connector rigidly to sheath |
| Sheath materials | SS and high-temperature alloys per Watlow MI offering |
| Applications | Heat treating, furnaces/kilns, turbines, bearing temperature, power stations, process OEM |
| Features | Quick connect/disconnect mini plug; matching alloys for higher accuracy; small OD for fast response |
Documents
FAQ
Q: Max temperature? A: About 1200 °C (2200 °F) depending on type/sheath.
Q: Mini plug limit? A: Miniature connectors for OD up to 0.125 in (3.0 mm).
Q: What should I send for a quote? A: Type/OD/length/connector, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Accuracy | Meets or exceeds initial calibration tolerances per ASTM E230 |
| Approvals | ASTM E230 color coding / tolerances (typical sensor constructions) |
| Style | AC — mineral-insulated thermocouple with plug or jack termination (mini plug for sheath ≤0.125 in) |
| Temperature | MI constructions commonly to about 1200 °C (2200 °F); type/sheath dependent |
| Insulation | Compacted MgO mineral insulation (XACTPAK sheath) |
| Calibration | Type J, K and other ANSI/IEC calibrations; ASTM E230 color-coded connectors |
| Sheath | Diameters from about 0.020 in (0.50 mm); miniature connectors for OD up to 0.125 in (3.0 mm) |
| Termination | Plug or jack; pins/contacts same alloy as thermocouple (except Types R/S compensating alloys) |
| Junction | Grounded, ungrounded, or exposed junction options |
| Connector | ASTM color-coded connectors; adapter mounts connector rigidly to sheath |
| Sheath Materials | SS and high-temperature alloys per Watlow MI offering |
| Applications | Heat treating, furnaces/kilns, turbines, bearing temperature, power stations, process OEM |
| Special Features | Quick connect/disconnect mini plug; matching alloys for higher accuracy; small OD for fast response |
| Protection | Metal outer sheath protects conductors from oxidation and hostile environments |